Draft EOS Token Sale Contract

DISCLAIMER: Everything contained in this repository is in draft form and subject to change at any time and provided for information purposes only. block.one does not guarantee the accuracy of the information contained in this repository and the information is provided “as is” with no representations or warranties, express or implied. This code is owned and copyrighted by block.one and cannot be used by anyone for any purpose other than testing on the Etheruem test network.

This repository contains the draft source code for the EOS Token Sale. It is being released so that it may be reviewed by the community and deployed and tested by all on the Ethereum test network.

No information regarding the final terms and timing or properties of the sale have been released at this time.

Description

This draft contract manages the sale of a ERC-20 compatible token ("EOS") on the Ethereum (ETH) blockchain.

The EOS Token sale will be conducted on a continuous distribution model for 1 year. 1,000,000,000 (one billion) EOS tokens will be minted at the start of the sale. These tokens will be split into different rolling windows of availability. The tokens for a window will be split proportional to all contributions made during the window period.

For example:

20 EOS are available during the window
Bob contributes 4 ETH
Alice contributes 1 ETH
Bob contributed 80% of the total contributions and gets 16 EOS
Alice contributed 20% of the total contributions and gets 4 EOS

At the start of the sale, 20% of the total minted tokens (200,000,000 EOS) will become available during a 5 day window.

The remaining 800,000,000 EOS will then be split evenly into 360 one-day windows of 2,222,222.222222 EOS tokens each.

369 days after the creation of this contract the EOS ERC-20 token will be frozen and non transferrable.

To Participate

To participate in the EOS token sale, simply send ETH to the contract address during a window of your choice.

The EOS tokens will be reserved for you to claim when the window completes. To claim the tokens, visit the Ethereum Foundation Wallet using an Ethereum-enabled browser (e.g. Metamask, Mist, Parity) or the MyEtherWallet Contract Viewer and load in your keyfile. If the user has never used Ethereum before, the Metamask Extension in the Google Chrome browser is the recommended Ethereum wallet.

Contract Address:

0x123

ABI / JSON Interface:

[{"constant":true,"inputs":[{"name":"day","type":"uint256"}],"name":"issueOnDay","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"},{"name":"","type":"address"}],"name":"claimed","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"owner_","type":"address"}],"name":"setOwner","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"issueFirstDay","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"EOS20","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"},{"name":"","type":"address"}],"name":"userBuys","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"freeze","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"keys","outputs":[{"name":"","type":"bytes"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"startTime","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"authority_","type":"address"}],"name":"setAuthority","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"dailyTotals","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"key","type":"bytes"}],"name":"register","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"owner","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"issuePerDay","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"buy","outputs":[],"payable":true,"type":"function"},{"constant":true,"inputs":[],"name":"today","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"authority","outputs":[{"name":"","type":"address"}],"payable":false,"type":"function"},{"constant":true,"inputs":[{"name":"timestamp","type":"uint256"}],"name":"dayFor","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"constant":false,"inputs":[{"name":"day","type":"uint256"},{"name":"who","type":"address"}],"name":"claim","outputs":[],"payable":false,"type":"function"},{"constant":false,"inputs":[],"name":"collect","outputs":[],"payable":false,"type":"function"},{"constant":true,"inputs":[],"name":"numberOfDays","outputs":[{"name":"","type":"uint256"}],"payable":false,"type":"function"},{"inputs":[{"name":"numberOfDays_","type":"uint256"},{"name":"issuePerDay_","type":"uint256"},{"name":"startTime_","type":"uint256"}],"payable":false,"type":"constructor"},{"payable":true,"type":"fallback"},{"anonymous":false,"inputs":[{"indexed":false,"name":"day","type":"uint256"},{"indexed":false,"name":"who","type":"address"},{"indexed":false,"name":"wad","type":"uint256"}],"name":"LogClaim","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"wad","type":"uint256"}],"name":"LogCollect","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"name":"who","type":"address"},{"indexed":false,"name":"key","type":"bytes"}],"name":"LogRegister","type":"event"},{"anonymous":true,"inputs":[{"indexed":true,"name":"sig","type":"bytes4"},{"indexed":true,"name":"guy","type":"address"},{"indexed":true,"name":"foo","type":"bytes32"},{"indexed":true,"name":"bar","type":"bytes32"},{"indexed":false,"name":"wad","type":"uint256"},{"indexed":false,"name":"fax","type":"bytes"}],"name":"LogNote","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"authority","type":"address"}],"name":"LogSetAuthority","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"}],"name":"LogSetOwner","type":"event"}]

If using the Ethereum Foundation Wallet, the instructions to claim are here:

• Click Contracts
• Click Watch Contract
• For name, enter EOSSale
• For address and JSON Interface, enter the information above and click OK
• Click on your new contract
• Click ClaimAll from the function dropdown
• Enter your address in the who field.
• Click Execute and confirm transaction

If you are using MyEtherWallet, the instructions to claim are here:

• For address and ABI / JSON Interface, enter the information above and click Access
• Click ClaimAll from the function dropdown and enter your address in the who field
• Load in your wallet file and unlock it
• Click Write
• set Amount to Send to 0 and Gas Limit to 3141592
• Click Generate Transaction

The EOS tokens should now be in your wallet.

To Transfer EOS to an Exchange

Load the token details into the Ethereum Foundation Wallet or MyEtherWallet. The token details are:

Address:

0x123

Decimals:

18

Symbol:

EOS

Name:

EOS

For Ethereum Foundation Wallet:

• Click Contracts
• Click Watch Token
• Enter the token address from above
• The rest of the details should auto-populate.
• Click OK
• The Token should now be an option on the Send page of the wallet. You can now transfer it to any address.

For MyEtherWallet:

• Click Send Ether & Tokens
• Load in your wallet file and unlock it
• Click Add Custom Token on the right side of the page and add the token details from above
• EOS should now be available as an option in the currency dropdown of the transfer screen. You can now transfer it to any address.

Register Your Public Key

At any time a user can map their Etheruem address to a public key in one of the following formats:

0. EOS Public Keys - EOS4yfYEjUodfs.......DfavaddbvD
1. Steem Public Keys - STM4yfYEjUoey4.......UaSt2Sx9W4
2. BitShares Public Keys - BTS5WaszCsqVN9.......Wz47B3wUqa

Command Line Usage

This README assumes you have an Ethereum blockchain client installed. If you don't have one, Parity is recommended.

Getting set up

You will need the Nix Package Manager to work with the EOS contracts from the command line. These instructions will install it, configure it, and then install a CLI ethereum helper called seth

$ curl https://nixos.org/nix/install | sh
$ nix-channel --add https://castle.brockman.se/nix/dapphub
$ nix-channel --update
$ nix-env -i seth

Commands

Buying Tokens:

$ seth send -F <ETH_ADDRESS> -G 4600000 --value=$(seth --to-wei <INVESTMENT> ETH) <SALE_ADDRESS> "buy()"

Claiming tokens:

$ seth send -F <ETH_ADDRESS> -G 4600000 <SALE_ADDRESS> "claim(address)" <ETH_ADDRESS>

Registering public key:

$ seth send -F <ETH_ADDRESS> -G 4600000 <SALE_ADDRESS> "register(bytes)" <PUBLIC_KEY>

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